An interview guide was developed and administered to a sample of 16 teachers who teach Physical Sciences/Chemistry in the 8th year of basic education in 30 secondary schools in Bunia city, with the objective of identifying the difficulties encountered by Physical Sciences teachers in teaching the chemistry component at this level. The results of the study revealed that these difficulties are related to the lesson plans preparation based on curriculum matrices, pedagogical resources, teachers’ professional knowledge, classroom management, the pedagogical approach used, and the time allocation of one hour per week provided for this discipline. When these results were analyzed using the Chi-square test, it was found that the observed differences between frequencies were significant for difficulties related to pedagogical resources, teachers’ professional knowledge, and the one-hour-per-week timetable allocated to this subject (with χ2cal > χ2tab at the 5% significance level). Consequently, the study recommends increasing the time allocated to the teaching of Physical Sciences, improving pedagogical resources in schools, and providing regular teacher training to ensure effective implementation of the situation-based approach, which is the pedagogical approach aligned with the curriculum of the Science Learning Domain for the 8th year of basic education.

This study aimed to determine the frequency, bacterial profile, and antibiotic susceptibility of urinary tract infections among pregnant women attending antenatal care at the SALAMA Hospital Center. A total of 58 pregnant women were included, constituting an exhaustive sample. The prevalence of urinary tract infections was 29.31%. Escherichia coli was the most frequently isolated pathogen (35.29%), followed by Staphylococcus aureus and Klebsiella pneumoniae (17.65% each). E. coli showed high susceptibility to levofloxacin (83.33%) and piperacillin (66.67%). Staphylococcus aureus was fully susceptible to piperacillin (100%), while Klebsiella strains showed 100% susceptibility to levofloxacin.

The objective of this study is to determine the prevalence of hyperuricemia among the personnel of the industrial slaughterhouse in the province of Ituri and identify the socio-demographic profile most affected by high levels of uric acid among the personnel of the industrial slaughterhouse in Ituri Province. We conducted a cross-sectional study using a convenience sampling method on blood samples from 50 staff members of the industrial slaughterhouse in the town of Bunia, Ituri province. After analysis, our study results show that 40.0% of the participants have a uric acid level exceeding 7.7mg/dl. Among these participants, 87.5% are aged 62 or older, 42.9% are male, 33.3% are university educated, 35.7% have worked for 0-20 years, and 11-19 years, respectively, and 34.8% come from the Bankoko neighborhood. In summary, a high prevalence of hyperuricemia had been observed among the employees of the industrial slaughterhouse located in Ituri Province, Bunia, reaching up to 40%. Considering these results, we recommend limiting the consumption of red meat, adopting a low-protein diet, and closely monitoring cardiovascular risk factors.

This study has been realized with the aim of analyzing the epidemiology of infections in the early neonatal period in the referral hospital of Bunia. The cross-sectional method supported by documentary analysis was used to collect data from 3775 respondents. After the analysis, it was revealed the following: - The frequency of early neonatal infections in the referral hospital of Bunia from 2018 to 2022 is 51.68%. - Neonatal fever was the most dominant factor in newborns (67.90%). - The majority of respondents had no background related to the mother (81.36%). - Almost the majority of respondents were submitted to Amoxycillin/ampicillin + Gentamycin (93.88%). - More than 89.97% of our respondents had benefited from regular follow-ups. - To end, healing was the main outcome of treatment. In view of these results, it should be noted that neonatal infection in the early period is still a major health problem in newborns. So, there is a strong need to develop effective preventative and curative interventions to support newborns in early neonatal period.

A questionnaire composed of two chemical equations has been administered to 203 second form scientific pupils from 15 Bunia schools in the Democratic Republic of the Congo in order to point out the errors they make in the equilibration of the redox reactions and identify the frequent errors. The obtained results, after the present study have revealed that the committed errors in the redox oxidation equilibration by these pupils are: the calculation of the stage oxidation, the oxidant identification and the reducer, the writing of redox couples, the half-equation redox writing, the reactionary area identification, the calculation of the least common multiple, the addition of the redox half-equation and the stoichiometric coefficient writing. By submitting these results to the Chi-Squared test, it has been found that the observed difference between the revealed error frequencies is very significant because Χ2cal = 327,40 ˃ Χ2tab 5% = 14,07. Thus, the most frequent errors are the oxidation numbers bad calculation (47, 78%), the confusion between the oxidant and the reducer (16, 26%) and the bad writing of the half-equation reduction oxidations (26, 11%). Teachers should, therefore exploit correctly the school books and the necessary procedures for the equilibrium of a redox reaction, but also find new methods to teach well the equilibration steps of an oxidation reaction and the reducer.

A written test has been administred to 226 pupils of the fourth form scientific, chemistry-biology option of 11 schools of Bunia town in DR Congo in order to evaluate the level of acquisition of total ionic reactions by the surveyed pupils. The obtained results at the end of these tests have shown that these pupils do not master correctly the notions of total ionic reactions taught to them (38,94 % of success). These pupils are very skillful in the explaination test (60,18 %) rather than in the execution test (13,72 %). In fact, they easily master the concepts to be memorized ; on the other hand, their failures concern the determination of the electronic transfer of ion, ionisation of molecules in the ionic reactions, the complete writing of a chemical equation and to the preparation of a compound considering the chart representing the characters of volatility and insolubility of a compound. The analysis of the variances of the average results of schools do not significantly differ to the threshold of the significance of 5 % (Fobs 0.05 = 0,81 < Ftab 0.05 = 1,87). This shows that the pupils of 4th form scientific, chemistry-biology option of Bunia town in RD Congo have the same level of mastering of the notions of the total ionic reactions.